cleanup doc

Author: pcrespov

services/web/server/src/simcore_service_webserver/director_v2/_controller/_rest_exceptions.py

@@ -31,8 +31,9 @@ async def _handler_director_service_error_as_503_or_4xx(
     request: web.Request, exception: Exception
 ) -> web.Response:
     """
-        Handles DirectorV2ServiceError exceptions by returning a 503 Service Unavailable if it's a server error (5XX),
-        or a 4XX client error if it's a client error (4XX).
+    Handles DirectorV2ServiceError exceptions by responding with
+        - 503 Service Unavailable if the directorv2 reponds with a server error (5XX),
+        - or bypass with the same error if it's a client error (4XX).
     """
     assert isinstance(exception, DirectorV2ServiceError)  # nosec
     assert status_codes_utils.is_error(